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Date: Wed, 16 Feb 2011 23:22:00 -0000
From: Thomas Martitz <thomas.martitz@student.htw-berlin.de>
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Subject: Re: infinite for-loop and related question
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Am 16.02.2011 22:49, schrieb Jonathan Wakely:
> On 16 February 2011 21:37, Bob Plantz wrote:
>> On 02/16/2011 12:41 PM, Jason Mancini wrote:
>>> Though I still find the output of this odd:
>>>
>>>    for (char i(1); i>0; ++i)
>>>      printf("%d %d\n", i, sizeof(i));
>>>
>>> ...
>>> 362195 1
>>> 362196 1
>>> 362197 1
>>> ...
>>>
>>> For very large values of char!  ^_^
>>>
>>> Jason
>> That's odd. With g++ 4.4.5 on an x86-64 machine in 64-bit mode I get:
>>
>> ---
>> 125 1
>> 126 1
>> 127 1
>>
>> which is what I would expect. That is, i is a (signed) char, and when it
>> goes over 127 it becomes a negative number, so the loop terminates.
> That would be the expected result if char was unsigned.

Not exactly, no? An unsiged char goes to 255.

Best regards.